Read the graphs from left to right.
hello.c is read by the compiler process (PID: 779338).
hello.c is read by the compiler process (PID: 1497018), which produces a file
of assembly code that is assembled by the assembler process (PID: 1497020),
which produces an object file, which is finally read by the linker process (PID:
1497024) which produces the executable hello.exe.
st.c is read by the compiler process (PID: 1500493), which produces a file
of assembly code that is assembled by the assembler process (PID: 1500494),
which produces an object file, which is finally read by the linker process (PID:
1497024) which produces the executable st.
The compiler process (PID: 1500499) reads a number of header files and shared
libraries to produce a file of assembly code, which is read by the assembler
(PID: 1500501) to produce an object file, which is in turn read by the linker
process (PID: 1500506), which finally writes the executable st.
